Which is better, forged steel valves or cast steel valves?
Cast steel valves are made of steel used for casting. They are a type of cast alloy. Cast steel is categorized into three types: cast carbon steel, cast low-alloy steel, and cast specialty steel. Cast steel refers to a type of steel casting produced by the casting process. Cast steel is primarily used to manufacture parts with complex shapes that are difficult to forge or machine, yet require high strength and ductility.
Forged steel refers to various forgings and forgings produced by the forging process. Forged steel parts are of higher quality than cast steel parts and can withstand high impact forces. They also have higher ductility, toughness, and other mechanical properties than cast steel parts. Therefore, forged steel parts should be used for all important machine parts.

An electric actuator primarily consists of a power board, main board, travel detection device, torque measurement device, AC contactor or frequency converter, motor, and reducer. An electric actuator uses a small motor to drive a worm gear in a first-stage reduction mechanism, capable of delivering multi-turn, angular, or linear motion to the valve. The actuator's motion output is determined by the characteristics of the valve being controlled.

This regulation applies to the setting of gate valves, stop valves, ball valves, butterfly valves and pressure reducing valves in petrochemical plants. The setting of check valves, safety valves, regulating valves and steam traps shall refer to the relevant regulations. This regulation does not apply to the setting of valves on underground water supply and drainage pipes.

Model and specification verification
Confirm that the type of check valve (such as lift type, swing type, butterfly type, etc.), nominal diameter, pressure level and pipeline system match to avoid leakage or failure due to specification mismatch.

Abnormal pressure rise in gate valve cavity refers to a phenomenon in which, when the valve is closed or partially closed, the trapped medium expands due to heat or pressure buildup, causing the pressure in the valve cavity to rise significantly, potentially exceeding the system design pressure. This situation can pose serious safety hazards and equipment damage, requiring targeted protective measures.

Excessive pursuit of high material: non-corrosive media (such as water, air) can use carbon steel valve body to avoid unnecessary costs.
Ignore dynamic seals: Valves that are frequently operated need to pay attention to stem seals (such as graphite packing vs. spring-loaded PTFE).
Ignore thermal expansion: High-temperature pipelines need to calculate the thermal displacement of the valve body and pipeline to prevent stress damage.